<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>yan</title>
        <script src="js/jquery-3.6.0.min.js"></script>
        <script src="js/d3.v5.min.js"></script>
        <script src="js/mpld3.v0.5.8.min.js"></script>
    </head>
    <body>
        <div>hello world!</div>
    </body>
</html>